Readiness in action: Osan’s active shooter exercise

Defenders assigned to the 51st Security Forces Squadron clear a building during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise strengthened base-wide emergency rapid response capabilities. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

Defenders assigned to the 51st Security Forces Squadron prepare to engage with the simulated perpetrator during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise ensures Team Osan remains vigilant and prepared for real-world threats. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

U.S. Air Force Tech. Sgt. Matthew Merserve, 51st Security Forces Squadron defender, stands guard during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise allowed Airmen to sharpen their ability to respond quickly under pressure. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

A tourniquet is applied to a simulated casualty during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise tested teamwork, communication, and coordination with base-wide emergency response agencies. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

Defenders assigned to the 51st Security Forces Squadron evacuate a simulated casualty for medical treatment during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise tested teamwork, communication, and coordination with base-wide emergency response agencies. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

Defenders assigned to the 51st Security Forces Squadron carry a simulated wounded casualty during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise tested teamwork, communication, and coordination with base-wide emergency response agencies. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

Defenders assigned to the 51st Security Forces Squadron leave a room after neutralizing a simulated threat during an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise tested teamwork, communication, and coordination with base-wide emergency response agencies. (U.S. Air Force photo by Staff Sgt. Sarah Williams)

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Readiness in action: Osan’s active shooter exercise

Published Sept. 19, 2025
By Staff Sgt. Sarah Williams
51st Fighter Wing Public Affairs

OSAN AIR BASE, Republic of Korea --

The 51st Fighter Wing conducted an active shooter exercise at Osan Air Base, Republic of Korea, Sept. 18, 2025. The exercise strengthened base-wide emergency rapid response capabilities, reinforcing the wing's ability to respond rapidly to real-world threats. (U.S. Air Force photo by Staff Sgt. Sarah Williams)